{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PB3508-E3/45","brand":"Vishay","brandSlug":"vishay","productSlug":"PB3508-E3-45","canonicalUrl":"https://icboms.com/vishay/PB3508-E3-45","factsUrl":"https://icboms.com/api/mcp/products/PB3508-E3%2F45","rawCanonicalId":null},"summary":{"shortDescription":"Vishay PB3508-/45, single-phase bridge rectifier, 800 V peak reverse, 35 A average rectified, 1.1 V forward voltage at 17.5 A, through-hole 4-SIP PB package, -55°C to 150°C junction temp, active, ROHS3 compliant.","salesMarkdown":"The PB3508-E3/45: The PB3508-/45: The Vishay PB3508-/45 is a single-phase bridge rectifier in a through-hole 4-SIP PB package, rated for 800 V peak reverse voltage and 35 A average rectified current. It uses standard silicon technology and is housed in the isoCINK+™ PB package, which provides a compact, high-thermal-performance footprint for a 35 A device. The 800 V peak reverse rating gives a comfortable margin for 240 VAC mains rectification (where the peak is ~340 V) and covers 400 VAC three-phase-to-DC conversion after accounting for line transients. The 35 A average current is the continuous DC output limit — the actual forward voltage drop of 1.1 V at 17.5 A means conduction losses are roughly 19 W at half-rated current, which sets the heatsink requirement. ## Thermal and electrical margins for the power stage The 10 µA reverse leakage at 800 V is a low figure for a 35 A bridge — it keeps standby dissipation negligible and limits thermal runaway risk at high ambient temperatures. The through-hole package (isoCINK+™ PB) is designed for vertical board mounting, which simplifies heatsink attachment and airflow routing in a bulk supply.","metaTitle":"PB3508-E3/45 Bridge Rectifier, 800V, 35A, Through Hole","metaDescription":"Vishay PB3508-E3/45 single-phase bridge rectifier, 800V peak reverse, 35A average, 1.1V Vf at 17.5A. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Diode Type":"Single Phase","Technology":"Standard","Mounting Type":"Through Hole","Package / Case":"4-SIP, PB","lifecycle_stage":"eol_hot","Operating Temperature":"-55°C ~ 150°C (TJ)","Supplier Device Package":"isoCINK+™ PB","Voltage - Peak Reverse (Max)":"800 V","Current - Reverse Leakage @ Vr":"10 µA @ 800 V","Current - Average Rectified (Io)":"35 A","Voltage - Forward (Vf) (Max) @ If":"1.1 V @ 17.5 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.71","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.71000","currency":"USD"},{"qty":10,"price":"$3.33000","currency":"USD"},{"qty":100,"price":"$2.72840","currency":"USD"},{"qty":500,"price":"$2.32268","currency":"USD"},{"qty":1000,"price":"$2.17800","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ea6e1580bc2ae985f01c049398cc2d9b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy PB3508-/45 and check current pricing?","answer":"The PB3508-/45 is sourced through independent distribution channels. Submit an RFQ for current availability and pricing — both are confirmed at quote time. No stock-holding claim is made; each order is quoted against the requested quantity."},{"question":"What does the 1.1 V forward voltage at 17.5 A mean for my design?","answer":"The 1.1 V forward voltage at 17.5 A means conduction losses are about 19 W at half the rated current. At full 35 A, losses will be higher due to the non-linear Vf vs If curve. This sets the minimum heatsink thermal resistance needed to keep the junction below 150°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/PB3508-E3-45","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/PB3508-E3-45 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}